Help Identifying fsarchiver Backup and Restore Approach (Backup Plugin)

Hi everyone,

I'm trying to understand/document the inner workings of the OpenMediaVault Backup Plugin, specifically how the fsarchiver tool is used for restoring system backups.

I came across this helpful guide. Based on this, I've created a few diagrams representing different approaches for fsarchiver method, so that I understand what's beeing backup and what will be restored:

Option 1:

• Backup OS drive + OMV (config, installed plugins and their config).
• Mergerfs with its settings and drives content

Option 2:

• Backup OS drive + OMV (config, installed plugins and their config).

Option 3:

• Backup OS drive + OMV (config, installed plugins and their config).
• Backup Docker containers, their settings and volumes

Option 4:

• Actually no diagram, but: backup captures the entire system (Options 1 thru 3)

Option 5:

• None of the above is right

Can someone with expertise in the OMV Backup Plugin confirm which of these architectures represent the approach used by fsarchiver for restoring backups?

Thanks in advance for your help!

Zitat von ryecoaaron

unless you leave docker storage in the compose plugin in /var/lib/docker.

You mean this?

BTW, looks like when I upgraded to OMV 7 (from OMV 6), that setting got changed and I need to move that directory to the Mergerfs main pool, not the main OS disk which is small. Should I shutdown Docker, move the folder, change the setting and re-start?

Zitat von ryecoaaron

You shouldn't put docker storage on mergerfs. Volumes are fine though.

Oh, I got confused. So:

• Docker (app) can stay were it is (/var/lib/docker) (240GB SSD)
• Containers' volumes will live on mergerfs (4TB HDD)